public async Task <Game> GuessAsync(Guid gameId, IReadOnlyList <int> numbers)
{
var game = GetGame(gameId);
if (game.PlayState != PlayState.InProgress)
{
throw new UserException($"The game with key {gameId} is not in progress. The game state is {game.PlayState}.");
}
if (numbers?.Count != game.SecretKeys.Count)
{
throw new UserException($"The provided number of guessed items ({numbers?.Count}) does not equal the game's secret key length ({game.SecretKeys.Count}).");
}
var lessThanOneNumbers = string.Join(", ", numbers.Where(n => n < 1).ToList());
if (lessThanOneNumbers != "")
{
throw new UserException($"The following numbers provided in the guess are lower than the minimum supported (1): {lessThanOneNumbers}.");
}
var wrongNumbers = string.Join(", ", numbers.Where(n => n > game.Options.MaximumKeyValue).ToList());
if (wrongNumbers != "")
{
throw new UserException($"The following numbers provided in the guess are higher than the possible maximum for the game ({game.Options.MaximumKeyValue}): {wrongNumbers}.");
}
var guessNumberMap = numbers.Select((k, i) => (k, i)).Where(n => n.k != game.SecretKeys[n.i]).GroupBy(n => n.k).ToDictionary(g => g.Key, g => g.Count());
game.GivenGuesses.Add(new Guess(numbers,
numbersAtRightPlace: game.SecretKeys.Select((k, i) => (k, i)).Count(n => n.k == numbers[n.i]),
numbersAtWrongPlace: game.SecretKeys.Select((k, i) => (k, i)).Where(n => n.k != numbers[n.i]).GroupBy(n => n.k).ToDictionary(g => g.Key, g => g.Count())
.Sum(n => Math.Min(n.Value, guessNumberMap.TryGetValue(n.Key, out var k) ? k : 0))));
if (new [] { PlayState.Lost, PlayState.Won }.Contains(game.PlayState))
{
await ScoreRepository.AddScoreAsync(game);
if (!GameRepository.TryRemoveGame(game))
{
throw new UserException($"The finished game ({game.Id}, {game.PlayState}) could not be removed from the repository.");
}
}
return(game);
}
public IEnumerable <Game> GetGames() => GameRepository.GetGamesForUser(UserService.GetCurrentUserId());
public Game GetGame(Guid gameId) =>
GameRepository.TryGetGame(gameId, out var game) && game.UserId == UserService.GetCurrentUserId()
? game
: throw new UserException($"The game with key {gameId} was not found or was assigned to another user.");
public GameService(GameRepository gameRepository, ScoreRepository scoreRepository, UserService userService)
{
GameRepository = gameRepository;
ScoreRepository = scoreRepository;
UserService = userService;
}
